Cooling unit



June 6, 1933. L. COPEMAN 1,912,826

COOLING UNIT Filed Jan. 3l. 1930 x /f/ m/J- @5' JNVENTOR.

A TTORNEY.

Patented Juas 6, 1933` i Umweg-STATES PATENT OFFICV LLOYD GrcoPEMAm orTMNT, MICHIGAN, AssIGNon To corEMAN LABORATORIES i :"CQMPANY. oFFLINLIMICHIGAN, A 4conromifrroiv` oF MIGHIGAN ooonING. Unrr Thisiiiventioiifrelates to Ycooling units, and has to do| particularly Withcooling units of the type adapted to be used for cooling `large areas,such as display cases, butcherA s boxes, etc.

More specifically, the Y present invention has to do with what might betermed a multiple unit lowside, each unit or section of which is of verysimple but efficient `con- T y ed to interlock With the other and eachprovided with a conduit and suitable means for `positioning the conduitswithin the casing; `said casings serving as molds for the positioningmeans and the positioning means serving as a hold over for the coolingunit.

In the drawing:

Fig. 1 illustrates a typical installation ot my noivel cooling unit.

Fig. 2 is a sectional view illustrating the `2.5 u method of assemblingthe multiple units together.

Fig. 3 1s a. fragmentary sectional view illustrating one manner ofsealing the joints between the multiple units. 3e In my Patents No.1,671,761 and No. ff 1,671,762 I have disclosed the use of stone informing lowsides for mechanical refrigerating systems, said stone actingas a holld over in place of brine. The` present invention has to do witha particular embodiment of this use of stone in combination with a novelform of cooling unit.

The cooling unit of the present invention may be made up of any desirednumber of units and in Fig. 2 I have shown three of 75 such units as at1, 2, and 3. Each section preferably consists of an outer piece o fcopper tubing 4 the diameter of which will depend upon the particularuse to which the uunit may be sub'ected.

This length o copper tubing 4 will serve as a mold informing eachcomplete multiple unit. VIn completing each unit,\a suitable conduit 5may be positioned within the mold and the mold then filled withV stone.

The conduit f5 ispreferablypositioned soV thatfoneendprotrudes from theunitv` as at 6, asuitable core havinggbeenplacedlin the other end oftheunit to `form the enlarged cavity7. ,p y

The copper tubing used `is preferably fof standard stockV and thusrelatively inexpe`n`` sive. 'When the multiple units, areassembled, thestone filling is hernietically sealed and thus may bel of the cheapestagrade of" il oXfychloride cement or other-"artificial stone. Theinterior pipes 5 "may ormay not be nec essary as it"will be obvious thatsuitable conduits may be formed directlyinthe stone. In this case, anysuitable-,means may be utilized for forming joints between the respecntiveunits. ""1 i `In" assembling the units, the protruding portions 6.6ithe conduits V5 are 'preferably coated-with suitable sealingmaterial,such assynthetic rosin or any other similar substanceaiid the twoadjacent units joinedtogether. After this operation, "a suitable sleeve8 may be moved to the position shown inFig'JB. This' sleeve may be sweatinto 75 position or given `anyy vsuitable operation so as tosubstantially seal thej-int'.'L "f It will be obvious that therespective unitsA may` be` fabricated1 `and Vassembled at the' place ofVinstallation and @thus ally that is necessary is ya" supply of lengthsuof copper tubing andcorresponding -lengths of. conduits. These maybeicutbfffasdesired at the `place of` installation, although, ofcourse,it would be preferable tolhavestandard` R lengths .to make `up the.general` construction of the entire lowside. Suitableielbow joints` 3`may be provided and these, of course, may be` distorted considerably soyas toifitinto .any particular installationQ l y Regia-i'dlessof whetherthe cooling unit is formed at the Vplace of manufacture or at y theplace of installation,"it will be obvious thatall thatis necessary isto' pour the arti-1` icial lstone' intoplace and immediately" join 9.?the units together, theiinal setting of the" "l" stone takingplaceafterassembly. l This use of the outer` 'copper casing asa moldthus` wise `berequiredinfallowing the stone to 19g set. Also thecombination oi' copper casing and stone inner Wall provides a verystrong unit capable of large ice melting capacity and at the same timeproviding sufficient hold over capacity.

That I claim is :y y f l v Y l. A multiple unit lowside for mechanicalrefrigerating systems, comprising a plurality of complete independentunits directly joined together and contacting' end to' end to form acontinuous conduit for receiving and circulating a refrigerant, eachof-said units being provided with a permanent Wall oi solid materialsurrounding the conduit andformed of a substance which acts as a holdover7 said permanent Walls being connected together to form a continuousWall of hold over 'material for .said continuous conduit.

ing ofen outer casing and an inner `Wall of stone, said casings forminga mold for said stone, said inner -wall of stone. inthe joined togetherunits forminga continuous stone structure. A j Y j 4. A lowside formechanical' refrigerating systems, comprising a plurality of separateunits connected together, each unit being provided with a conduitregistering with the next adjacent unit whereby to form a con-- tinuousconduit for receiving and circulating a refrigerant, a Wall ofplastically applied stone surrounding the conduit in eachv unit andforming a continuous Wall of stone in the connected together units and acasing surrounding each Wall lof stone and adapted to serve 'as a moldfor the stone, when plastically applied. 1

5. A lowside for mechanical refrigeratingl systems, comprising aplurality of separate units connected together, 'each unit beingprovided with a conduit registering with the next adjacent unit whereby,to form a continuous conduit for receiving and`"circu latingalrefrige'rant, a Wall of plastically applied stone surrounding-theconduit in each unit and forming a continuous Wall of stone in theconnected together units and ay casing surrounding each Wall of stoneand adapted to serve asa mold for theY stone, when plastically applied,and means for connecting adjacent units together whereby to seal thesame.

6. A loWside for mechanical refrigerating systems comprising a pluralityof cylindrical units, said units consisting of a cylindrical outercasing, internally positioned conduits and an intermediate Wall ofstone, said units being adapted to be connected together to form acomplete lowside of any desired length. and shape, and said conduitsintermediate Wall of stone registering one with the other when saidunits are joined togethertoform a continuous stone structure andcontinuous inner and outer structures.

In testimony whereof I aix my signature.

LLOYD G. COPEMAN.

